WILLIAMS, CHRISTOPHER,JOHN,SELLWOOD (2011) Hydrological Connectivity - a study into representative metrics for
a humid temperate catchment in northern England. Masters thesis, Durham University.
|PDF - Accepted Version|
Hydrological connectivity has been identified as a concept which can help hydrology move
towards a hydrological approach focussing on homogeneity rather than difference. The method of
hydrological connectivity measurement has subsequently developed as key in permitting this
concept to reach its potential. Previous studies have focused on topography and soil moisture
respectively to solve this problem, generating metrics and indexes in order to predict the
potential for connectivity spatially and temporally. This study focused on ascertaining the relative
success of these different approaches for a humid temperate catchment in northern England. It
was found that simple saturated area based metrics performed better than complex cluster
analyses. In addition to this the Topographic Wetness Index was found to struggle to ascertain
active areas within the catchment. Subsequently, building upon the Network Index of Lane et al.
(2004), a new index was developed in order to combine topographic and soil moisture
measurements to give a probabilistic estimation of connectivity over time. This Cumulative
Probability Network Index was found to be the most promising method for estimating
hydrological connectivity, particularly for upland catchments with shallow soils.
|Item Type:||Thesis (Masters)|
|Award:||Master of Science|
|Keywords:||Hydrological connectivity, temperate, Network Index, Cumulative Probability Network Index, metric|
|Faculty and Department:||Faculty of Social Sciences and Health > Geography, Department of|
|Copyright:||Copyright of this thesis is held by the author|
|Deposited On:||27 Apr 2011 14:33|